Blockout Blinds vs Blockout Curtains: Which Keeps More Light Out?

If you need a room to be dark for sleeping, shift work, or a home theatre, the question is not whether you need blockout. The question is whether a blockout blind or a blockout curtain does a better job.

Blockout roller blinds sit flat inside the window frame and block light across the glass. They are effective, affordable, and take up no space. The issue is light bleed. Even a well fitted inside mount roller blind will have small gaps at the edges where light creeps in. This is because the blind cannot sit flush against the frame on all four sides. An outside mount reduces this by overlapping the frame, but some bleed will remain at the bottom where the blind meets the sill.

Blockout curtains, particularly double curtains with a blockout lining, wrap around the window more fully. A properly fitted blockout curtain on a ceiling mounted track with a return on each side creates a near total seal. Light has fewer paths to sneak through. The fabric weight also provides better acoustic insulation and thermal control compared to a roller blind.

In practice, the best solution for full darkness is both. A blockout roller blind inside the frame, and a blockout curtain over the top. This is the setup we install most often in master bedrooms and children’s rooms across Brisbane. The roller blind catches the light at the glass, and the curtain catches whatever gets past the edges.

If you only want one product: 

For bedrooms: blockout curtains on a ceiling track with returns give better overall darkness. For bathrooms or kitchens: blockout roller blinds are more practical because they resist moisture and sit out of the way. For rental properties: blockout rollers are cheaper and easier to maintain.

Double roller blinds offer a middle ground. The blockout layer provides darkness at night, and the sunscreen layer gives you a daytime option without switching to curtains.

We manufacture all blockout products in house and can advise on the best setup for your room. Book a consultation  and we will show you fabric samples and demonstrate the light blocking performance of each option in your actual space.